package com.lyh.mall.product.service.impl;

import com.lyh.mall.product.dao.AttrAttrgroupRelationDao;
import com.lyh.mall.product.dao.AttrGroupDao;
import com.lyh.mall.product.entity.AttrAttrgroupRelationEntity;
import com.lyh.mall.product.entity.AttrEntity;
import com.lyh.mall.product.entity.AttrGroupEntity;
import com.lyh.mall.product.service.AttrGroupService;
import com.lyh.mall.product.service.AttrService;
import com.lyh.mall.product.vo.AttrGroupRelationVo;
import com.lyh.mall.product.vo.AttrGroupWithAttrsVo;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.lyh.common.utils.PageUtils;
import com.lyh.common.utils.Query;


@Service("attrGroupService")
public class AttrGroupServiceImpl extends ServiceImpl<AttrGroupDao, AttrGroupEntity> implements AttrGroupService {

    @Autowired
    private AttrAttrgroupRelationDao relationDao;
    @Autowired
    private AttrService attrService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrGroupEntity> page = this.page(
                new Query<AttrGroupEntity>().getPage(params),
                new QueryWrapper<AttrGroupEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    public PageUtils queryPage(Map<String, Object> params, Long catelogId) {
        //select * from pms_attr_group where catelog_id=? and (attr_group_id=key or attr_group_name like %key%)
        String key = (String)params.get("key");
        //构造QueryWrapper
        QueryWrapper<AttrGroupEntity> wrapper = new QueryWrapper<>();

        if (!StringUtils.isEmpty(key)){
            wrapper.and((obj)->{
                obj.eq("attr_group_id",key).or().like("attr_group_name",key);
            });
        }

        //如果传过来的三级分类id为0，就查询所有数据
        if (catelogId == 0){
            IPage<AttrGroupEntity> page = this.page(
                    new Query<AttrGroupEntity>().getPage(params),
                    wrapper
            );
            return new PageUtils(page);
        }else {
            wrapper.eq("catelog_id",catelogId);
            IPage<AttrGroupEntity> page = this.page(
                    new Query<AttrGroupEntity>().getPage(params),
                    wrapper
            );
            return new PageUtils(page);
        }
    }

    /**
     * 删除属性与分组的关联关系
     * @param vos
     */
    @Override
    public void deleteRelation(AttrGroupRelationVo[] vos) {
        List<AttrAttrgroupRelationEntity> entityList = Arrays.asList(vos).stream().map((item) -> {
            AttrAttrgroupRelationEntity attrgroupRelationEntity = new AttrAttrgroupRelationEntity();
            BeanUtils.copyProperties(item, attrgroupRelationEntity);
            return attrgroupRelationEntity;
        }).collect(Collectors.toList());
        relationDao.deleteBatchRelation(entityList);
    }

    /**
     * 获取分类下所有分组&关联属性
     * @param catelogId
     * @return
     */
    @Override
    public List<AttrGroupWithAttrsVo> getAttrGroupWithAttrsByCatelogId(Long catelogId) {

        //1、查询分组信息
        List<AttrGroupEntity> attrGroupEntityList = this.list(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));
        //2、查询所有属性
        List<AttrGroupWithAttrsVo> collect = attrGroupEntityList.stream().map(group -> {
            AttrGroupWithAttrsVo attrGroupWithAttrsVo = new AttrGroupWithAttrsVo();
            BeanUtils.copyProperties(group,attrGroupWithAttrsVo);
            List<AttrEntity> attrEntityList = attrService.getRelationAttr(attrGroupWithAttrsVo.getAttrGroupId());
            attrGroupWithAttrsVo.setAttrs(attrEntityList);
            return attrGroupWithAttrsVo;
        }).collect(Collectors.toList());

        return collect;
    }


}